Stop motion for looms



Aug. 18, 1925. 1,559,352

o. R,`ENGE1.MANN ET AL STOP MOTION FOR LOOMS Filed July 17, 1924 2 sheets-sheet 1 'ATTORNEYS Aug. '18, 1925. 1,550,352

O. R. ENGELMANN ET ALf STOP MOTION FOR LOOMS Filed July i7. 1524 2 sneets-sneet 2 l V NTORS @WWW CII

Patented Aug. 18, 1925.

:UNITED meer; wem-Ef @a Menswear Sm asma ros MMS- Application filed Julyy 17,

flhis' invention relates to a newer im provedM stopI motion for' ribbon` looms and has for its object to' producea simple and inexpensive, yet efficient `device :tor this "purpose.. "c "i The main object of the invention is toV provide means whereby on the loosening up or ybreaking of oneor more `ol:l the ribbons' being vvoven in the loom the latter will be im- -m`ediately brought to a stop,= thus avoiding the confusion, and loss 'of time and laborat present involved when such a loosening up or sx'nashi occurs.

In :the accompanying drawings which illustrate the' preferred embodiment of the invention :4 i

Figure 1 is a side elevation of so much of onecforml of 'a loom 'as is necessary to show the location of the present stop motion;

`Eig.2 isv aside elevation on. an enlarged scaleof partof Fig. 1 showing the present invention applied thereto;

Fig. `3 isa plan View of 2;

Fig. 4 is a front elevation of Fig. 3;

Figi 5 is a crosse-section'taken on the line 5-5 of Fig. 3 looking in the direction of the arrows; and, i

Fig. G 1s a plan vien7 of a detail.

In'the severaliigures of the drawings, the numeral 1l indicates j certain` portions of the framevvorlrof a ribbon loom, which' may be ofany desirable approved type; 2 indicates thebreastpiece; 3 the hatten which, through the instrumentality of appropriate ymechanism, is' adapted'to be oscillated'tovvard and away from "thebreast' piece 2 in the usual manner; 4 indicates a pivoted bar or rod carrying the `batten3,`which` in turn is carc 'ried by an upstanding arm 'attachednto" or forming a part"oii"`the'framework lof the floo'm indicates the shuttle mechanism 'of 'tl'1e"loom," which: iscarried by the hatten f5 iii the usual manner; 7 vindicates the ribbons being `Woven; an d 8 the handle for starting yand-fstopping the i'looin, Which'handle is i Athose skilled lin vthe "artiy v th'e'present invention.

1924. serial:` No. maria shown in the form of a bar mounted with capability y of "longitudinal movemehtmin eitherV direction onv the front aceiofV the breast .pieceV 2." This 'hards' xof course connected in the usual manner' 'Withthe y,belt- Vshifter or other equivalent-contifol mechanism, but such connection isnot shown iii the drawings as it forms 'no partofthe' present invention 'and Will'be "readily u'nderstoodfby "Wit-h this explanation of the Well-known parts "of a ribbon loom,`we` Will now` proceed and describe the' construction land'operation of' the stop mechanism, the subject-matter'of To the front aceof 'the batten 3 and extending across the Width of theloom there 1s mounted to revolve" in'bealri'ngs `9"a' spindle 10.' To this 'spindle is `secured a tripor catch in the orniof an arc-shapedmember 11 (see Fig. 5) Which,Y as `shown in'said ligure is preferably shaped'at itslower'end toy loosely encircley thespindle 10 and'then be secured theretb by A a set'screw12; Itis to be observed that the upperfedgeof the catch 11`does` not Contact with thefront face of the hatten 3,' except at' the extreme 'right '(s'e'e Fig. 3), Where it is provided with an integral' extension 13, serving uthe purpose hereinafter to be described.' To one endco'f said extension is connected a'sp'ring r14, the other end of which is connected totheibat- 3. l i .i

To the underside of the breast piece-:0J is` xed a rod 15$Which extends across the lWidth of' the loom andon this ro'd aire"'looselv mounted a plurality of hookelike members 16,"one for 'each ribbon; These hookelike members 16 are each provided -with a short laterally projecting roller 19 which is adapted in the normal operation of themachine to rest i against the ribbon 7,r in which position tliehooky is so suspended that inthe oscillation of the batteur?? it Will not interv ereavith the catchl; Eachroll'er 1951s mounted'and'free torotateona pin 2O fixed to and projecting from its hook 16', and the outer end thereof is bentlas shown in Fig. 6) so that' the hook is prevented Jfrom moving inV one direction on the rod 15 1by one edge of the ribbon contacting therewith and in the other direction bytheopposite edge of the ribbon engaging one side of the hook itself. Below 'the'- rollers 1,9 "there iS a1'- ranged 'a' stop rod 22 extending across the machine and fixed to the breast piece 2 as by brackets 23. As will be seen from Fig. 2, the ribbon 7 after passing the roller 19 is continued down on the breast piece side of said rod and then down to the usual sand rollers 24. The rod 22 is provided for the treble purpose of providing an angular de flection of the ribbon so as to ferm a con venient rest for the hook 16; to act as a stop to prevent any of the hooks dropping too far down when their ribbon loosens or breaks, and for preventing the loom operator from accidentally interfering with the hooks 16 while letting back any individual ribbon, an operation well known in the art and which is accomplished from the underside of the breast piece 2.

Fixed to the frame of the machine at one end thereof is a stub shaft 25 on which is pivoted a fork-like member 26 provided with two spaced-apart downwardly-extending fingers 27. The inner end of the member 26 underlies a finger 23 fixed to and projecting` from the spindle 10, and a spring 29 connected thereto and to the underside of the breast piece.

Also fixed to the underside of the breast piece 2 is a tube or pipe 30 which, for a portion of its length, is provided at both sides thereof with a slot 31. Within the tube 30 is positioned a spring 32, one end of which is connected to the pipe and the other end to a cross bar 33 working within the pipe and projecting transversely therefrom through the slots 31.

Fixed to the starting and stopping bar S is a downwardly projecting right-angle member 35, the horizontal portion of which is provided with two rip-standing spacedapart fingers 36. As will be clearly seen from Fig. 2, these lingers are spaced apart at adistance greater than the fingers 27 of the member 26, but the distance between them is less than the length of the cross bar 33.

The operation of the above-described mechanism may be briefly described as follows:

In the normal operation of the machine the fingers 27 of the member 26 extend down between the cross piece 33 and the fingers 36 of the member 35 (see Fig. 4). In this position the spring 32 is extended so that when the lingers 27 are raised as hereinafter described, the cross piece 33 will fly back under t-he influence of the spring, strike the fingers 36 of the piece 35, and in turn operate the handle 8 to stop t-he machine. The lifting of the fingers 27 is effected as follows:

Should any one of the ribbons 7 slacken or break, the corresponding hook 16 at once drops as it is no longer held suspended in its upper position by the normal tension of the ribbon. Said hook will thus engage the catch 11 and as this latter is reciprocating with the batten 3 said catch will be pulled down on the outward movement of the latter turning the spindle 10 and in turn lowering the trip 28 into contact with the inner end of the finger piece 26. This end is consequently depressed while, of course, the opposite end carrying the two fingers 27 is raised as shown in dotted lines in Fig. 2, with the result hereinbefore indicated. The spring 29 returns the finger piece 26 promptly to its normal position.

After the necessary adjustment has been made to the loom the stop motion is quickly re-set by operating the handle 8 in the usual manner to start the loom, that is to say, by moving it to the left with respect to the drawings. This movement will cause the fingers 36 to engage the cross bar 33 and carry it to the left stressing the spring until the lingers 27 are encountered. As shown in Fig. 4, the ngers 27 are beveled at their lower ends on the inner side thereof so that in the motion of re-setting when they are encountered by the bar 33 they will rise slightly to permit the bar to pass thereunder and then drop back again under the influence of spring 29, thus locking the bar in its set position.

Regarding the extension 13 and the spring 14, these are provided so that in the normal operation of the machine the spindle 10 and the catch 11 carried thereby are held in proper position for engagement by the hooks 16. The said catch 11 is formed arc-shaped so that should for any reason a ribbon slacken or break and its controlling hook accordingly drop when the batten in its movement is so far away from the breast piece that the hook when it drops does not fall so as to engage the catch 11, then, on the next movement of the batten toward the breast piece, on the said hook encountering the catch 11 it will ride up the face of said member, drop into position and then, on the next movement of the ba-tten away from the breast piece, will pull the catch 11 down and turn the spindle 10 as hereinbefore described. The hook is, of course, also shaped to facilitate this operation.

It will be understood that the stop inotion hereinbefore described, and shown in the drawings, is merely the preferred embodiment thereof and various changes may be made therein without departing from the spirit and scope of the invention.

Having now described our invention what we claim and desire to secure by Letters Patent is:

1. In a stop motion for ribbon looms having a batten and a breast piece, a plurality of ribbon-controlled hooks carried by the breast piece, and means carried by the batten 'for automatically eecting the stoppage of the loom on the release of a hook by its ribbon.

2, A stop motion for ribbon looms having Vintresse a betten and a breast piece, comprising e Itrip piece `earried'by the batten, a plurality 0f books oarred' 'by the breast piece, the Lenagenie-nt of which with the trip is 'een- .f-l'lolled by thotonsion ofthe ribbons being noten', and means for entomatieally bringing the loom to a stopon the eligagement of a hook with tbe'tipf A Stop'mo'ton for ribbon looms having a batten and a breast piece, comprising'a trip 'piece ,Carried by the betten, a plurality of hooks carried bythjebreast'pieee, ,the engagement or non-engagement of each of which 'thetripfis controlled Vby the ten- So'n oa 'bbo'n bein,`g`Y Wolven, and means operated by'fsai'd trip piece' for bringing the loom to rest on such engagement taking place. Y

4. In a ribbon loom provided with a batten, a; :stop motion comprising a trip piece carried by and oscillating with the batten, a hook held suspended by the ribbon being Woven clear of said trip piece during the normal operation of the loom but which on the ribbon slackening or breaking will fall so as to engage said trip, and means for automatically stopping the loom on .such falling of the hook.

5. A stop motion for ribbon looms having a batten and a breast piece comprising a trip piece carried by the batten, a plurality of hooks carried by the breast piece and held suspended by the ribbons being woven clear of said trip piece during the normal operation of the loom, a fork-like member pivoted to the frame of the loom, a cross bar looked under tension by said fork-like member during the normal operation of the loom, and a finger piece carried by the trip piece adapted on the slaekening or breaking of a ribbon and the fall of its hook into engagement with the trip piece to raise said fork-like member to release the cross bar and bring the loom to rest.

6. A stop motion for ribbon looms having a batten and a breast piece, comprising a trip piece carried by the batten, a plurality of hooks carried by the breast piece and held suspended by the ribbons being woven clear of said trip piece during the normal operation of the loom., a fork-like member pivoted to the frame of the loom, a cross bar locked under tension by said forkdike member during the normal operation of the loom and a finger piece carried by the trip piece adapted on the islackening or breaking of a ribbon and the fall of its hook into engagement with the trip piece to raise said fork-like member to Vrelease the cross bar and bring the loom to rest, said trip piece being arc-shaped in cross section and the hooks being co-operatingly shaped so that 1 should the hook drop when the batten 1s so far out in its movement that said hook 7 cannot engage the trip piece, then on the gagement of which with the trip is controlled by the tension of the ribbonsbemg Woven', means for automatically bringingthe loom -to a stop on'the engagement 'of a hook with the trip, and a stop roddi'sposed beneath said hooks, for the purposesstated.

8'. In a stop motion for ribbon looms having a batten anda breast'piece, a trip piece" carried ,by4 :the batten,'a rod secured to the breast piece, a plurality of hooks pivoted on said rod, and means operated by said trip piece for bringing the loom to rest on thek engagement of a hook with the trip piece, the engagement or non-engagement of the hooks With the trip piece and their position on the rod being controlled by the ribbons. Y

9. In a stop motion yfor ribbon looms having a bat-ten and a breast p-iece, a spindle attached to the breast piece, an arc-shaped trip piece carried by said spindle, av rod\ secured to the under side of the breast piece, a plurality of hooks pivoted on said rod in line with the ribbons being woven, a laterally-extending roller on each hook adapted to contact with its ribbon to hold the hook, in the normal operation of the machine, out oi. engagement With the trip piece, a finger carried by said first-mentioned rod, and means operated by said finger on the falling of a hook into engagement with the trip piece, by the slackening or the breaking of its ribbon, to automatically bring the loom to rest.

10. In a stop motion for ribbon looms a fork-like member pivoted to the frame of the loom, a pair of spaced-apart lingers depending therefrom, a right angle member carried by the usual starting and stopping handle of the loom, a pair of 11p-standing kfingers on said latter member, a split tube two pairs of fingers, a. spring within said tube, a cross bar connected to one end of said spring, said second pair of lingers being spaced apart at a distance greater than said first mentioned pair of fingers but less than the length of the cross bar, and said first mentioned pair of fingers acting to lock the cross bar under tension during the normal operation of the loom, and means operated bythe ribbons being woven for releasing said cross bar to bring the loom to rest on the slackening or breaking of a ribbon.

l1. In a ribbon loom provided with a hatten and a breast piece, a stop motion comprising a trip piece carried by and oscillating With the batten, a finger secured to and projecting from said trip, a plurality of hooks, one for each ribbon being Woven, carried by the breast piece, a roller on each hook adapted to Contact With a ribbon and hold the hook suspended clear ofthe trip piece when the ribbon is taut but which Will permit the hook to fall into the path of the trip on the slaekening or breaking of the ribbon, a hook-like member pivoted to the frame of the loom with its inner end underlying the finger on the trip, a pair of spacedapa-rt fingers depending from said member, a right angle member secured to the usual operating handle of the loom, a pair of spaced-apart lingers upstanding from said latter member, a split tube, a cross piece proi In testimony whereof We have signed our names to this specification.

OSCAR R. ENGELMANN. WILLIAM M. ENGELMANN. WILLIAM J. CURRIE.

piece and stop the ,25 

